jellyflood/Swiftfin/Extensions/iOSViewExtensions/NavBarDrawerButtons/NavBarDrawerView.swift

128 lines
4.7 KiB
Swift

//
// Swiftfin is subject to the terms of the Mozilla Public
// License, v2.0. If a copy of the MPL was not distributed with this
// file, you can obtain one at https://mozilla.org/MPL/2.0/.
//
// Copyright (c) 2022 Jellyfin & Jellyfin Contributors
//
import SwiftUI
private let drawerHeight: CGFloat = 36
struct NavBarDrawerView<Buttons: View, Content: View>: UIViewControllerRepresentable {
private let buttons: () -> Buttons
private let content: () -> Content
init(
@ViewBuilder buttons: @escaping () -> Buttons,
@ViewBuilder content: @escaping () -> Content
) {
self.buttons = buttons
self.content = content
}
func makeUIViewController(context: Context) -> UINavBarDrawerHostingController<Buttons, Content> {
UINavBarDrawerHostingController(buttons: buttons, content: content)
}
func updateUIViewController(_ uiViewController: UINavBarDrawerHostingController<Buttons, Content>, context: Context) {}
}
class UINavBarDrawerHostingController<Buttons: View, Content: View>: UIViewController {
private let buttons: () -> Buttons
private let content: () -> Content
private lazy var navBarBlurView: UIVisualEffectView = {
let blurView = UIVisualEffectView(effect: UIBlurEffect(style: .systemThinMaterial))
blurView.translatesAutoresizingMaskIntoConstraints = false
return blurView
}()
private lazy var contentView: UIHostingController<Content> = {
let contentView = UIHostingController(rootView: content())
contentView.view.translatesAutoresizingMaskIntoConstraints = false
contentView.view.backgroundColor = nil
return contentView
}()
private lazy var drawerButtonsView: UIHostingController<Buttons> = {
let drawerButtonsView = UIHostingController(rootView: buttons())
drawerButtonsView.view.translatesAutoresizingMaskIntoConstraints = false
drawerButtonsView.view.backgroundColor = nil
return drawerButtonsView
}()
init(
buttons: @escaping () -> Buttons,
content: @escaping () -> Content
) {
self.buttons = buttons
self.content = content
super.init(nibName: nil, bundle: nil)
}
@available(*, unavailable)
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func viewDidLoad() {
super.viewDidLoad()
view.backgroundColor = nil
addChild(contentView)
view.addSubview(contentView.view)
contentView.didMove(toParent: self)
view.addSubview(navBarBlurView)
addChild(drawerButtonsView)
view.addSubview(drawerButtonsView.view)
drawerButtonsView.didMove(toParent: self)
NSLayoutConstraint.activate([
drawerButtonsView.view.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor, constant: -drawerHeight),
drawerButtonsView.view.heightAnchor.constraint(equalToConstant: drawerHeight),
drawerButtonsView.view.leadingAnchor.constraint(equalTo: view.leadingAnchor),
drawerButtonsView.view.trailingAnchor.constraint(equalTo: view.trailingAnchor),
])
NSLayoutConstraint.activate([
navBarBlurView.topAnchor.constraint(equalTo: view.topAnchor),
navBarBlurView.bottomAnchor.constraint(equalTo: drawerButtonsView.view.bottomAnchor),
navBarBlurView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
navBarBlurView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
])
NSLayoutConstraint.activate([
contentView.view.topAnchor.constraint(equalTo: view.topAnchor),
contentView.view.bottomAnchor.constraint(equalTo: view.bottomAnchor),
contentView.view.leadingAnchor.constraint(equalTo: view.leadingAnchor),
contentView.view.trailingAnchor.constraint(equalTo: view.trailingAnchor),
])
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
self.navigationController?.navigationBar.setBackgroundImage(UIImage(), for: .default)
self.navigationController?.navigationBar.shadowImage = UIImage()
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
self.navigationController?.navigationBar.setBackgroundImage(nil, for: .default)
self.navigationController?.navigationBar.shadowImage = nil
}
override var additionalSafeAreaInsets: UIEdgeInsets {
get {
.init(top: drawerHeight, left: 0, bottom: 0, right: 0)
}
set {
super.additionalSafeAreaInsets = .init(top: drawerHeight, left: 0, bottom: 0, right: 0)
}
}
}